treeview删除子项后前面加号不能自动清除的问题如何解决?[已解决]
本帖最后由 cashiba 于 2024-1-17 15:51 编辑#include <GUIConstantsEx.au3>
#include <GuiImageList.au3>
#include <GuiTreeView.au3>
#include <MsgBoxConstants.au3>
#include <WindowsConstants.au3>
Example()
Func Example()
Local $hItem, $hImage, $iImage, $idTreeView
Local $iStyle = BitOR($TVS_EDITLABELS, $TVS_HASBUTTONS, $TVS_HASLINES, $TVS_LINESATROOT, $TVS_DISABLEDRAGDROP, $TVS_SHOWSELALWAYS, $TVS_CHECKBOXES)
GUICreate("TreeView Delete All", 400, 300)
$idTreeView = GUICtrlCreateTreeView(2, 2, 396, 268, $iStyle, $WS_EX_CLIENTEDGE)
GUISetState(@SW_SHOW)
$hImage = _GUIImageList_Create(16, 16, 5, 3)
_GUIImageList_AddIcon($hImage, "shell32.dll", 110)
_GUIImageList_AddIcon($hImage, "shell32.dll", 131)
_GUIImageList_AddIcon($hImage, "shell32.dll", 165)
_GUIImageList_AddIcon($hImage, "shell32.dll", 168)
_GUIImageList_AddIcon($hImage, "shell32.dll", 137)
_GUIImageList_AddIcon($hImage, "shell32.dll", 146)
_GUICtrlTreeView_SetNormalImageList($idTreeView, $hImage)
_GUICtrlTreeView_BeginUpdate($idTreeView)
For $x = 1 To 2
$iImage = Random(0, 5, 1)
$hItem = _GUICtrlTreeView_Add($idTreeView, 0, StringFormat("[%02d] New Item", $x), $iImage, $iImage)
For $y = 1 To 3
$iImage = Random(0, 5, 1)
_GUICtrlTreeView_AddChild($idTreeView, $hItem, StringFormat("[%02d] New Child", $y), $iImage, $iImage)
Next
Next
_GUICtrlTreeView_EndUpdate($idTreeView)
_GUICtrlTreeView_Expand($idTreeView)
MsgBox($MB_SYSTEMMODAL, "Information", "Delete Children")
_GUICtrlTreeView_DeleteChildren($idTreeView, $hItem)
; Loop until the user exits.
Do
Until GUIGetMsg() = $GUI_EVENT_CLOSE
GUIDelete()
EndFunc ;==>Example
treeview删除所有子项后,为什么项的前面还是有一个加号?
这个帖子里A大说删除后加一句 _GUICtrlTreeView_SetChildren($hTreeView, $hItem, 0)就可以解决了
但是试了下,没有效果。
看了下原码里已经添加了_GUICtrlTreeView_SetChildren。如下:
Func _GUICtrlTreeView_DeleteChildren($hWnd, $hItem)
Local $bResult
If IsHWnd($hWnd) Then
$bResult = _SendMessage($hWnd, $TVM_EXPAND, BitOR($TVE_COLLAPSE, $TVE_COLLAPSERESET), $hItem, 0, "wparam", "handle")
Else
$bResult = GUICtrlSendMsg($hWnd, $TVM_EXPAND, BitOR($TVE_COLLAPSE, $TVE_COLLAPSERESET), $hItem)
EndIf
If $bResult Then _GUICtrlTreeView_SetChildren($hWnd, $hItem, False)
Return $bResult
EndFunc ;==>_GUICtrlTreeView_DeleteChildren
不知道问题出在哪里... Func _GUICtrlTreeView_SetChildren($hWnd, $hItem, $bFlag = True)
;Local $iCount = _GUICtrlTreeView_GetChildCount($hWnd, $hItem)
;If $iCount = -1 And $bFlag Then Return False
;If $iCount And Not $bFlag Then Return False
If Not IsHWnd($hItem) Then $hItem = _GUICtrlTreeView_GetItemHandle($hWnd, $hItem)
Local $tItem = $__g_tTVItemEx
DllStructSetData($tItem, "Mask", BitOR($TVIF_HANDLE, $TVIF_CHILDREN))
DllStructSetData($tItem, "hItem", $hItem)
DllStructSetData($tItem, "Children", $bFlag)
Return __GUICtrlTreeView_SetItem($hWnd, $tItem)
EndFunc ;==>_GUICtrlTreeView_SetChildren
经过调试,发现把上述函数的前3行注释掉就可以了。
看样子是函数写得有点问题....
另外发现_GUICtrlTreeView_DeleteChildren($hWnd, $hItem)的返回值总是0/FALSE 不知道现在用的autox是不是旧版本。也许是版本太旧了,新版本应该没问题吧
{:1_194:} cashiba 发表于 2024-1-17 15:53
不知道现在用的autox是不是旧版本。也许是版本太旧了,新版本应该没问题吧
...
应该是你用的太新了 _ _||
我测试了下 3.3.16.1 之前的版本都添加一行 _GUICtrlTreeView_SetChildren 就行 本帖最后由 cashiba 于 2024-1-17 21:52 编辑
Func _GUICtrlTreeView_DeleteChildren($hWnd, $hItem)
Local $bResult
If IsHWnd($hWnd) Then
$bResult = _SendMessage($hWnd, $TVM_EXPAND, BitOR($TVE_COLLAPSE, $TVE_COLLAPSERESET), $hItem, 0, "wparam", "handle")
Else
$bResult = GUICtrlSendMsg($hWnd, $TVM_EXPAND, BitOR($TVE_COLLAPSE, $TVE_COLLAPSERESET), $hItem)
EndIf
If $bResult Then _GUICtrlTreeView_SetChildren($hWnd, $hItem, False)
Return $bResult
EndFunc ;==>_GUICtrlTreeView_DeleteChildren
Func _GUICtrlTreeView_SetChildren($hWnd, $hItem, $bFlag = True)
;Local $iCount = _GUICtrlTreeView_GetChildCount($hWnd, $hItem)
;If $iCount = -1 And $bFlag Then Return False
;If $iCount And Not $bFlag Then Return False
If Not IsHWnd($hItem) Then $hItem = _GUICtrlTreeView_GetItemHandle($hWnd, $hItem)
Local $tItem = $__g_tTVItemEx
DllStructSetData($tItem, "Mask", BitOR($TVIF_HANDLE, $TVIF_CHILDREN))
DllStructSetData($tItem, "hItem", $hItem)
DllStructSetData($tItem, "Children", $bFlag)
Return __GUICtrlTreeView_SetItem($hWnd, $tItem)
EndFunc ;==>_GUICtrlTreeView_SetChildren
这样的话,问题应该出在上面注释掉的部分,最可能是
_GUICtrlTreeView_GetChildCount($hWnd, $hItem)
的返回值不对
或者
If $bResult Then _GUICtrlTreeView_SetChildren($hWnd, $hItem, False)
这行里的$bResult 非真,导致
_GUICtrlTreeView_SetChildren($hWnd, $hItem, False)
没执行...
cashiba 发表于 2024-1-17 21:49
这样的话,问题应该出在上面注释掉的部分,最可能是
_GUICtrlTreeView_GetChildCount($hWnd, $hItem)
的返 ...
不要注释那三行,那样会有其它问题。
不过该函数确实有错误,将第三行的
If $iCount And Not $bFlag Then Return False
改为
If $iCount > 0 And Not $bFlag Then Return False
即可 afan 发表于 2024-1-17 23:07
不要注释那三行,那样会有其它问题。
不过该函数确实有错误,将第三行的
If $iCount And Not $bFlag Then ...
谢谢A大解答!
另外,测试发现_GUICtrlTreeView_DeleteChildren($hWnd, $hItem)的返回值总是0/FALSE
不知道是不是个例,也许是自己的系统问题?有机会换个电脑试试看 cashiba 发表于 2024-1-17 23:14
谢谢A大解答!
另外,测试发现_GUICtrlTreeView_DeleteChildren($hWnd, $hItem)的返回值总是0/FALSE
不知 ...
这个我昨天用 3.3.16.1 测试时就注意了,是 True,也就是会正常执行后面的 _GUICtrlTreeView_SetChildren (3.3.16.1 在 _GUICtrlTreeView_DeleteChildren 内添加了 _GUICtrlTreeView_SetChildren,而之前的版本都没有,需要自行调用)
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